Masahiko Hirokawa

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Switching power supply unit and electric power supply system
- Patent number 11,611,283
- Issue date Mar 21, 2023
- TDK Corporation
- Masahiko Hirokawa
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Switching power supply unit and electric power supply system
- Patent number 11,539,299
- Issue date Dec 27, 2022
- TDK Corporation
- Masahiko Hirokawa
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method for determining cell number, cell number determination devic...
- Patent number 8,604,797
- Issue date Dec 10, 2013
- TDK-Lambda Corporation
- Tadao Senriuchi
- G01 - MEASURING TESTING
Information Patent Grant
Battery protection circuit, method for protecting battery, power su...
- Patent number 8,461,807
- Issue date Jun 11, 2013
- TDK-Lambda Corporation
- Tadao Senriuchi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power supply control device, method for controlling power supply, p...
- Patent number 8,369,056
- Issue date Feb 5, 2013
- TDK-Lambda Corporation
- Tadao Senriuchi
- G05 - CONTROLLING REGULATING
Information Patent Grant
Switching power supply
- Patent number 6,717,390
- Issue date Apr 6, 2004
- TDK Corporation
- Hiroshi Miyazaki
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Switching power supply with transfer function control circuit
- Patent number 6,683,798
- Issue date Jan 27, 2004
- TDK Corporation
- Ken Matsuura
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Switching power supply unit
- Patent number 6,567,285
- Issue date May 20, 2003
- TDK Corporation
- Hisanori Cho
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Switching power supply
- Patent number 6,532,160
- Issue date Mar 11, 2003
- TDK Corporation
- Masahiko Hirokawa
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
SWITCHING POWER SUPPLY APPARATUS AND ELECTRIC POWER SUPPLY SYSTEM
- Publication number 20240171080
- Publication date May 23, 2024
- TDK Corporation
- Masahiko HIROKAWA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SWITCHING POWER SUPPLY APPARATUS AND ELECTRIC POWER SUPPLY SYSTEM
- Publication number 20240146200
- Publication date May 2, 2024
- TDK Corporation
- Masahiko HIROKAWA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SWITCHING POWER SUPPLY UNIT AND ELECTRIC POWER SUPPLY SYSTEM
- Publication number 20220021312
- Publication date Jan 20, 2022
- TDK Corporation
- Masahiko HIROKAWA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SWITCHING POWER SUPPLY UNIT AND ELECTRIC POWER SUPPLY SYSTEM
- Publication number 20210336547
- Publication date Oct 28, 2021
- TDK Corporation
- Masahiko HIROKAWA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Battery protection circuit, method for protecting battery, power su...
- Publication number 20100259222
- Publication date Oct 14, 2010
- TDK-Lambda Corporation
- Tadao Senriuchi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Power supply control device, method for controlling power supply, p...
- Publication number 20100259856
- Publication date Oct 14, 2010
- TDK-Lambda Corporation
- Tadao Senriuchi
- G05 - CONTROLLING REGULATING
Information Patent Application
Method for determining cell number, cell number determination devic...
- Publication number 20100259270
- Publication date Oct 14, 2010
- TDK-Lambda Corporation
- Tadao Senriuchi
- G01 - MEASURING TESTING
Information Patent Application
Switching power supply
- Publication number 20030039129
- Publication date Feb 27, 2003
- TDK Corporation
- Hiroshi Miyazaki
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Switching power supply
- Publication number 20030035307
- Publication date Feb 20, 2003
- TDK Corporation
- Ken Matsuura
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Switching power supply
- Publication number 20020136033
- Publication date Sep 26, 2002
- TDK Corporation
- Masahiko Hirokawa
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
Semiconductor device
- Publication number 20020134999
- Publication date Sep 26, 2002
- TDK Corporation
- Masahiko Hirokawa
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Switching power supply unit
- Publication number 20020054498
- Publication date May 9, 2002
- Hisanori Cho
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...

Masahiko Hirokawa

Person

Patents Grantslast 30 patents

Switching power supply unit and electric power supply system

Switching power supply unit and electric power supply system

Method for determining cell number, cell number determination devic...

Battery protection circuit, method for protecting battery, power su...

Power supply control device, method for controlling power supply, p...

Switching power supply

Switching power supply with transfer function control circuit

Switching power supply unit

Switching power supply

Patents Applicationslast 30 patents

SWITCHING POWER SUPPLY APPARATUS AND ELECTRIC POWER SUPPLY SYSTEM

SWITCHING POWER SUPPLY APPARATUS AND ELECTRIC POWER SUPPLY SYSTEM

SWITCHING POWER SUPPLY UNIT AND ELECTRIC POWER SUPPLY SYSTEM

SWITCHING POWER SUPPLY UNIT AND ELECTRIC POWER SUPPLY SYSTEM

Battery protection circuit, method for protecting battery, power su...

Power supply control device, method for controlling power supply, p...

Method for determining cell number, cell number determination devic...

Switching power supply

Switching power supply

Switching power supply

Semiconductor device

Switching power supply unit